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Finding the Fourth Proportional to 61,205.70, 84,493.79 and 47,561.58

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Solution

The fourth proportional to 61,205.70, 84,493.79 and 47,561.58 is: 65,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,205.70 : 84,493.79 = 47,561.58 : x
  2. Step 2: Convert to fraction form
    61,205.70/84,493.79 = 47,561.58/x
  3. Step 3: Cross multiply
    61,205.70x = 84,493.79 × 47,561.58
  4. Step 4: Simplify right side
    61,205.70x = 4,018,657,914.78
  5. Step 5: Solve for x
    x = 4,018,657,914.78/61,205.70
  6. Step 6: Final answer
    x = 65,658.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.